package com.cn.algorithm02.class15;

import java.util.HashMap;

/***
 * @author: hels
 * @description:
 **/
public class C0 {
    public static void main(String[] args) {
        HashMap<String, String> map = new HashMap<>();
        map.put("kk", "va222");
        map.put("33", "va222");
        System.out.println(map.containsKey("kk"));
    }
}
